CN103447750A - Replacing method for high-speed wire finishing mill roller box bearings - Google Patents
Replacing method for high-speed wire finishing mill roller box bearings Download PDFInfo
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- CN103447750A CN103447750A CN2012101814741A CN201210181474A CN103447750A CN 103447750 A CN103447750 A CN 103447750A CN 2012101814741 A CN2012101814741 A CN 2012101814741A CN 201210181474 A CN201210181474 A CN 201210181474A CN 103447750 A CN103447750 A CN 103447750A
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- eccentric bushing
- angular contact
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- filmatic bearing
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Abstract
The invention relates to a replacing method for high-speed wire finishing mill roller box bearings including an angular contact bearing and a roller box oil film bearing. The replacing method is characterized by including the steps: firstly, manufacturing a drawing device for the angular contact bearing; secondly, disassembling an eccentric bushing and the angular contact bearing; thirdly, manufacturing a simple press device for disassembling and assembling the oil film bearing; fourthly, disassembling the oil film bearing of the eccentric bushing on a working side; fifthly, disassembling the oil film bearing of the eccentric bushing on a transmission side; sixthly, mounting the oil film bearing; seventhly, assembling a roller shaft; eighthly, assembling the angular contact bearing; ninthly, assembling a press cover of the angular contact bearing. The assembly efficiency of a high-speed wire (preliminary) finishing mill roller box is improved, the probability of damage and scrap of assembly spare parts caused by an assembly method is reduced, the cost of the spare parts is saved, and labor intensity is reduced.
Description
Technical field
The present invention relates to a kind of replacing method, specifically the replacing method of finishing mill of high-speed wire rod mill roller axle box bearing.
Background technology
Two high line (in advance) roll box of finishing mills of procedure for steel rolling in metallurgical industry factory are divided into three types.The roller case is mainly by a roller box body, and two rooted teeth are taken turns roll shafts, two cover transmission side angular contact bearings, and two cover active side filmatic bearings, two cover transmission side filmatic bearings, two eccentric bushings, a set of roll-separating mechanism, two cover collars retaining mechanisms, only pile the piece composition for two.
The operation principle of roller case is that two eccentric bushings are installed in the roller box body, and under the drive of roll-separating mechanism, it can centering rotate a certain angle in roller box body, thereby reaches the variation of gear roll shaft centre-to-centre spacing.In eccentric bushing, transmission side also is equipped with a set of angular contact bearing, and it mainly bears axial load and prevents roll shaft axial displacement in eccentric bushing.Roll shaft is arranged in filmatic bearing, at the mill rolls case, within inner minute, forms the overhang roll axle, utilizes the collars retaining mechanism collars can be lock onto on overhang roll.Be equipped with and only pile piece at the transmission side of mill rolls case, only pile in the groove that piece embeds the eccentric bushing transmission side, with it, control axial float and the collars backing plate axial dimension with eccentric sleeves, thereby reach the centering of collars slotted eye.
When the mill rolls case rolls off the production line maintenance, change the replacing that maximum spare parts is exactly angular contact bearing and filmatic bearing, therefore a kind of good roller axle box bearing replacing method is quite important in the hard-cover maintenance of milling train.At traditional rolling bearing method for dismounting, be roasting with grilled gun, the method of drawing horse to connect, there are the characteristics such as unstability and inefficiency in traditional method for dismounting, the damage of the method breaker roll axle is very large, tend to cause the damage of bearing and axle journal unrepairable, even may repair the service life that also tends to the equipment that affects.And traditional filmatic bearing dismounting; directly to beat with sledgehammer and cushion block; damage to eccentric bushing is large especially; and in this way the assembly lube film bearing due to the destabilizing factor of beaing sledgehammer; often can cause filmatic bearing broken or fill to enter; have a strong impact on the efficiency of assembling of high line (in advance) finishing mill roller box, increased the probability that the reason because of assembly method causes mounted spare to damage and scrap, increased greatly spare parts cost and labour intensity.
Summary of the invention
The present invention is intended to overcome the defect of prior art, a kind of replacing method of finishing mill of high-speed wire rod mill roller axle box bearing is provided, improved the efficiency of assembling of high line (in advance) finishing mill roller box, reduced the probability that the reason because of assembly method causes mounted spare to damage and scrap, save spare parts cost, reduced labour intensity.
In order to solve the problems of the technologies described above, the present invention is achieved in that
A kind of replacing method of finishing mill of high-speed wire rod mill roller axle box bearing, comprise the replacing of angular contact bearing and the replacing of roller case filmatic bearing, it is characterized in that this method comprises the steps:
Step 1: make the angular contact bearing draw-off gear; This device comprises roll mandrel storing cart and drawbench storing cart;
Step 2: the dismounting of eccentric bushing and angular contact bearing; Roll mandrel and drawbench are lain in respectively on roll mandrel storing cart and drawbench storing cart, adjust the adjusting nut on roll mandrel storing cart screw rod according to the size of roll mandrel, make roll mandrel center line and drawbench center line on same level, after centering, with drawbench, transmission side eccentric bushing and angular contact bearing are pulled out reposefully;
Step 3: make the simple and easy press device of filmatic bearing dismounting; According to the dismounting of eccentric bushing size and filmatic bearing, the design of the cross bar of simple and easy press device is divided into to third gear, during according to dismounting, the stroke of the size of eccentric bushing and hydraulic jack carrys out regulation stall;
Step 4: the dismounting of active side eccentric bushing filmatic bearing; The active side eccentric bushing is steadily tipped upside down on the eccentric bushing storing unit of simple and easy press device, then the filmatic bearing briquetting is stuck on eccentric bushing, again the hydraulic jack top is tipped upside down on the filmatic bearing briquetting, during placement, filmatic bearing briquetting and hydraulic jack top centering, finally steadily eject filmatic bearing by hydraulic jack;
Step 5: the dismounting of transmission side eccentric bushing filmatic bearing; Adopt destructive the dismounting, with sanding machine, the filmatic bearing of scrapping is ground to openning one, then filmatic bearing is taken out;
Step 6: the installation of filmatic bearing; First eccentric bushing is put into to baking box and be added to 121 ℃, with a garter spring or O type circle, two filmatic bearings are clamped together to put into liquid nitrogen cooling simultaneously, then the eccentric bushing heated is lain on the eccentric bushing storing unit of simple and easy press device, the active side of eccentric bushing upward, again filmatic bearing is stuck in the eccentric bushing endoporus, wear clean proximity gloves and buttress filmatic bearing, again lying on filmatic bearing after filmatic bearing briquetting centering, finally hydraulic jack is tipped upside down on the filmatic bearing briquetting, be pressed into stably in eccentric bushing by filmatic bearing;
Step 7: the assembling of roll mandrel; First the active side eccentric bushing is placed on platform, again cleaned roll mandrel is sling and put on the active side eccentric bushing, after having hung in Deng roll mandrel, after the filmatic bearing of transmission side eccentric bushing is coated to lubricating oil, its cover is installed on roll mandrel, again active side eccentric bushing and transmission side eccentric bushing are put on to alignment pin, tighten connecting bolt;
Step 8: the assembling of angular contact bearing; Roll mandrel is put on the frock table, ready angular contact bearing is heated to 121 ℃, before the angular contact bearing assembling, damping gasket is first put well, spread lubricating oil on axle journal, angular contact bearing packed into, while packing into by angular contact bearing with sleeve and hand hammer hammering to till shoulder;
Step 9: the assembling of angular contact bearing gland; After the angular contact bearing assembling, with the moment spanner, its gland is installed.
The replacing method of described finishing mill of high-speed wire rod mill roller axle box bearing is characterized in that: the simple and easy press device described in step 3, comprise a base, and the top of base is provided with two montants and a cross bar that connects two montants.
The replacing method of described finishing mill of high-speed wire rod mill roller axle box bearing, it is characterized in that: in the demolishing process of the transmission side eccentric bushing filmatic bearing described in step 5, need to keep the cleannes of eccentric bushing, prevent that oilhole from blocking, gloves can not be worn during operation, eccentric bushing will be prevented from damaging while cutting with sanding machine.
The replacing method of described finishing mill of high-speed wire rod mill roller axle box bearing, it is characterized in that: in the assembling process of the angular contact bearing gland described in step 9, when gland is beaten moment, the moment of screw is wanted evenly, adopt the fastening method in diagonal angle, divide the moment that is added to regulation for 3-4 time.
The invention has the beneficial effects as follows: the angular contact bearing draw-off gear has improved the stability that bearing is removed, and has avoided roll mandrel to be damaged in demolishing process, but also has improved operating efficiency; Simple and easy press device has improved the stability that filmatic bearing is changed, and has solved to a great extent the problem that inefficiency and spare part damage.Use this method greatly to improve the efficiency of assembling of the high line of steel rolling mill (in advance) finishing mill roller box, reduced the probability that the reason because of assembly method causes the mounted spare damage and scraps, saved spare parts cost, reduced labour intensity.
The accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
The structural representation that Fig. 1 is the roll mandrel storing cart.
The side view that Fig. 2 is Fig. 1.
The top view that Fig. 3 is Fig. 1.
Fig. 4 is the structural representation that in step 2, angular contact bearing is removed.
The assembling schematic diagram that Fig. 5 is filmatic bearing.
The specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows: a kind of replacing method of finishing mill of high-speed wire rod mill roller axle box bearing, comprise the replacing of angular contact bearing and the replacing of roller case filmatic bearing, this method comprises the steps:
Step 1: make the angular contact bearing draw-off gear; This device comprises roll mandrel storing cart 10 and drawbench storing cart 11;
As shown in Figure 4, step 2: the dismounting of eccentric bushing and angular contact bearing; Roll mandrel 12 and drawbench 13 are lain in respectively on roll mandrel storing cart 10 and drawbench storing cart 11, adjust the adjusting nut on roll mandrel storing cart 10 screw rods 14 according to the size of roll mandrel 12, make roll mandrel 12 center lines and drawbench 13 center lines on same level, after centering, with drawbench 13, transmission side eccentric bushing and angular contact bearing are pulled out reposefully;
As shown in Figure 5, step 3: make the simple and easy press device 1 of filmatic bearing dismounting; Simple and easy press device 1 comprises a base 8, and the top of base 8 is provided with two montants 9 and a cross bar 7 that connects two montants; According to the dismounting of eccentric bushing 3 sizes and filmatic bearing 4,7 designs of the cross bar of simple and easy press device 1 are divided into to third gear, during according to dismounting, the stroke of the size of eccentric bushing 3 and hydraulic jack 6 carrys out regulation stall;
Step 4: the dismounting of active side eccentric bushing filmatic bearing; Active side eccentric bushing 3 is steadily tipped upside down on the eccentric bushing storing unit 2 of simple and easy press device 1, then filmatic bearing briquetting 5 is stuck on eccentric bushing, again hydraulic jack 6 tops are tipped upside down on filmatic bearing briquetting 5, during placement, filmatic bearing briquetting 5 and hydraulic jack 6 top centerings, finally steadily eject filmatic bearing 4 by hydraulic jack 6;
Step 5: the dismounting of transmission side eccentric bushing filmatic bearing; Adopt destructive the dismounting, with sanding machine, the filmatic bearing of scrapping is ground to openning one, then filmatic bearing is taken out; In filmatic bearing when dismounting,, need to keep the cleannes of eccentric bushing, prevents that oilhole from blocking, and during operation, can not wear gloves, will prevent from damaging eccentric bushing while cutting with sanding machine.
Step 6: the installation of filmatic bearing, first eccentric bushing 3 is put into to baking box and be added to 121 ℃, with a garter spring or O type circle, two filmatic bearings are clamped together to put into liquid nitrogen cooling simultaneously, then the eccentric bushing heated is lain on the eccentric bushing storing unit 2 of simple and easy press device 1, the active side of eccentric bushing upward, again filmatic bearing 4 is stuck in eccentric bushing 3 endoporus, wear clean proximity gloves and buttress filmatic bearing 4, again lying on filmatic bearing 4 after filmatic bearing briquetting 5 centerings, finally hydraulic jack 6 is tipped upside down on filmatic bearing briquetting 5, filmatic bearing 4 is pressed in eccentric bushing 3 stably,
Step 7: the assembling of roll mandrel; First the active side eccentric bushing is placed on platform, again cleaned roll mandrel 12 is sling and put on the active side eccentric bushing, after having hung in Deng roll mandrel, after the filmatic bearing of transmission side eccentric bushing is coated to lubricating oil, its cover is installed on roll mandrel, again active side eccentric bushing and transmission side eccentric bushing are put on to alignment pin, tighten connecting bolt;
Step 8: the assembling of angular contact bearing; Roll mandrel 12 is put on the frock table, ready angular contact bearing is heated to 121 ℃, before the angular contact bearing assembling, damping gasket is first put well, spread lubricating oil on axle journal, angular contact bearing is adopted the mode of " back-to-back " pack into, the direction of axial force is packed into, while packing into by angular contact bearing with sleeve and hand hammer hammering to till shoulder;
Step 9: the assembling of angular contact bearing gland; After the angular contact bearing assembling, with the moment spanner, its gland is installed; When gland is beaten moment, the moment of screw is wanted evenly, to adopt the fastening method in diagonal angle, divides the moment that is added to regulation for 3-4 time.
Because the present invention adopts technique scheme, on traditional roller axle box bearing replacing method basis, the rolling bearing of pair roller case and oil film replacing method have been done larger improvement, the angular contact bearing draw-off gear has improved the stability that bearing is removed, avoid roll mandrel to be damaged in demolishing process, but also improved operating efficiency; Simple and easy press device has improved the stability that filmatic bearing is changed, and has solved to a great extent the problem that inefficiency and spare part damage.Use this method greatly to improve the efficiency of assembling of the high line of steel rolling mill (in advance) finishing mill roller box, reduced the probability that the reason because of assembly method causes the mounted spare damage and scraps, saved spare parts cost, reduced labour intensity.
Claims (4)
1. the replacing method of a finishing mill of high-speed wire rod mill roller axle box bearing, comprise the replacing of angular contact bearing and the replacing of roller case filmatic bearing, it is characterized in that this method comprises the steps:
Step 1: make the angular contact bearing draw-off gear; This device comprises roll mandrel storing cart and drawbench storing cart;
Step 2: the dismounting of eccentric bushing and angular contact bearing; Roll mandrel and drawbench are lain in respectively on roll mandrel storing cart and drawbench storing cart, adjust the adjusting nut on roll mandrel storing cart screw rod according to the size of roll mandrel, make roll mandrel center line and drawbench center line on same level, after centering, with drawbench, transmission side eccentric bushing and angular contact bearing are pulled out reposefully;
Step 3: make the simple and easy press device of filmatic bearing dismounting; According to the dismounting of eccentric bushing size and filmatic bearing, the design of the cross bar of simple and easy press device is divided into to third gear, during according to dismounting, the stroke of the size of eccentric bushing and hydraulic jack carrys out regulation stall;
Step 4: the dismounting of active side eccentric bushing filmatic bearing; The active side eccentric bushing is steadily tipped upside down on the eccentric bushing storing unit of simple and easy press device, then the filmatic bearing briquetting is stuck on eccentric bushing, again the hydraulic jack top is tipped upside down on the filmatic bearing briquetting, during placement, filmatic bearing briquetting and hydraulic jack top centering, finally steadily eject filmatic bearing by hydraulic jack;
Step 5: the dismounting of transmission side eccentric bushing filmatic bearing; Adopt destructive the dismounting, with sanding machine, the filmatic bearing of scrapping is ground to openning one, then filmatic bearing is taken out;
Step 6: the installation of filmatic bearing; First eccentric bushing is put into to baking box and be added to 121 ℃, with a garter spring or O type circle, two filmatic bearings are clamped together to put into liquid nitrogen cooling simultaneously, then the eccentric bushing heated is lain on the eccentric bushing storing unit of simple and easy press device, the active side of eccentric bushing upward, again filmatic bearing is stuck in the eccentric bushing endoporus, wear clean proximity gloves and buttress filmatic bearing, again lying on filmatic bearing after filmatic bearing briquetting centering, finally hydraulic jack is tipped upside down on the filmatic bearing briquetting, be pressed into stably in eccentric bushing by filmatic bearing;
Step 7: the assembling of roll mandrel; First the active side eccentric bushing is placed on platform, again cleaned roll mandrel is sling and put on the active side eccentric bushing, after having hung in Deng roll mandrel, after the filmatic bearing of transmission side eccentric bushing is coated to lubricating oil, its cover is installed on roll mandrel, again active side eccentric bushing and transmission side eccentric bushing are put on to alignment pin, tighten connecting bolt;
Step 8: the assembling of angular contact bearing; Roll mandrel is put on the frock table, ready angular contact bearing is heated to 121 ℃, before the angular contact bearing assembling, damping gasket is first put well, spread lubricating oil on axle journal, angular contact bearing packed into, while packing into by angular contact bearing with sleeve and hand hammer hammering to till shoulder;
Step 9: the assembling of angular contact bearing gland; After the angular contact bearing assembling, with the moment spanner, its gland is installed.
2. the replacing method of finishing mill of high-speed wire rod mill roller axle box bearing according to claim 1 is characterized in that: the simple and easy press device described in step 3, comprise a base, and the top of base is provided with two montants and a cross bar that connects two montants.
3. the replacing method of finishing mill of high-speed wire rod mill roller axle box bearing according to claim 1, it is characterized in that: in the demolishing process of the transmission side eccentric bushing filmatic bearing described in step 5, need to keep the cleannes of eccentric bushing, prevent that oilhole from blocking, gloves can not be worn during operation, eccentric bushing will be prevented from damaging while cutting with sanding machine.
4. the replacing method of finishing mill of high-speed wire rod mill roller axle box bearing according to claim 1, it is characterized in that: in the assembling process of the angular contact bearing gland described in step 9, when gland is beaten moment, the moment of screw is wanted evenly, adopt the fastening method in diagonal angle, divide the moment that is added to regulation for 3-4 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181474.1A CN103447750B (en) | 2012-06-05 | 2012-06-05 | The replacing options of finishing mill of high-speed wire rod mill roller axle box bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181474.1A CN103447750B (en) | 2012-06-05 | 2012-06-05 | The replacing options of finishing mill of high-speed wire rod mill roller axle box bearing |
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| CN103447750A true CN103447750A (en) | 2013-12-18 |
| CN103447750B CN103447750B (en) | 2015-09-02 |
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Cited By (3)
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| CN104440041A (en) * | 2014-12-01 | 2015-03-25 | 江苏永钢集团有限公司 | Dismounting device and method for oil film bearing in highline roll box |
| CN105345439A (en) * | 2015-12-12 | 2016-02-24 | 芜湖安瑞光电有限公司 | Mounting tooling of car lamp rear cover |
| CN112091597A (en) * | 2020-07-30 | 2020-12-18 | 河钢股份有限公司承德分公司 | High-speed wire finishing mill roller box assembling method |
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| CN104440041A (en) * | 2014-12-01 | 2015-03-25 | 江苏永钢集团有限公司 | Dismounting device and method for oil film bearing in highline roll box |
| CN105345439A (en) * | 2015-12-12 | 2016-02-24 | 芜湖安瑞光电有限公司 | Mounting tooling of car lamp rear cover |
| CN112091597A (en) * | 2020-07-30 | 2020-12-18 | 河钢股份有限公司承德分公司 | High-speed wire finishing mill roller box assembling method |
| CN112091597B (en) * | 2020-07-30 | 2022-01-25 | 河钢股份有限公司承德分公司 | High-speed wire finishing mill roller box assembling method |
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